The faceless mask is a pet unlock item which may be unlocked by defeating Gregorovic at the Heart of Gielinor. It unlocks the pet Greg.
As with other boss pet items, this item follows the drop threshold system; it has a base drop rate of 1/2,000 (1/1,000 in challenge mode) and a threshold of 400. This is not affected by the increased drop chance reward from reputation.
- ^ a b There is further information on this drop; see the associated page for details.
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